USB Polling rate

[eofek]

[edited formatting by moderator]

Hi John,

Thank you for your reply.

One of our researchers recently got a review of his research, which mentioned the problem of using a standard keyboard for measuring response time. When we looked for this issue in the internet, we encountered a post by Mario Kleiner, who is one of the developers of the Psychophysics Toolbox for Matlab.

In the post he discusses the 8 msec period of the windows polling :
http://tech.groups.yahoo.com/group/p...x/message/9006
I'm a software person, so please pardon my ignorance.
But aren't the request of USB device from the host computer, handled by the host and its operating system? If they are - how can you impose windows to serve the device every 1 msec? This issue is important to us because we need to know if we can use the empirisoft Direct-In with softwares like Matlab+ Psychophysics Toolbox and with Delphi.

Thanks in advance,
Erez Ofek
IIPDM